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View Compilation Error

0_0_35089054_31031.cpp: In function 'void init(int)':
0_0_35089054_31031.cpp:39:9: error: reference to 'rank' is ambiguous
         rank[ i ] = 1;
         ^
0_0_35089054_31031.cpp:29:16: note: candidates are: int rank [1015]
 int fa[ maxn ],rank[ maxn ];
                ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_35089054_31031.cpp:4:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_35089054_31031.cpp: In function 'double Kruskal(int, int)':
0_0_35089054_31031.cpp:117:17: error: reference to 'rank' is ambiguous
             if( rank[ fx ]<rank[ fy ] ){
                 ^
0_0_35089054_31031.cpp:29:16: note: candidates are: int rank [1015]
 int fa[ maxn ],rank[ maxn ];
                ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_35089054_31031.cpp:4:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_35089054_31031.cpp:117:28: error: reference to 'rank' is ambiguous
             if( rank[ fx ]<rank[ fy ] ){
                            ^
0_0_35089054_31031.cpp:29:16: note: candidates are: int rank [1015]
 int fa[ maxn ],rank[ maxn ];
                ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_35089054_31031.cpp:4:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_35089054_31031.cpp:118:17: error: reference to 'rank' is ambiguous
                 rank[ fy ] += rank[ fx ];
                 ^
0_0_35089054_31031.cpp:29:16: note: candidates are: int rank [1015]
 int fa[ maxn ],rank[ maxn ];
                ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_35089054_31031.cpp:4:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_35089054_31031.cpp:118:31: error: reference to 'rank' is ambiguous
                 rank[ fy ] += rank[ fx ];
                               ^
0_0_35089054_31031.cpp:29:16: note: candidates are: int rank [1015]
 int fa[ maxn ],rank[ maxn ];
                ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_35089054_31031.cpp:4:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_35089054_31031.cpp:122:17: error: reference to 'rank' is ambiguous
                 rank[ fx ] += rank[ fy ];
                 ^
0_0_35089054_31031.cpp:29:16: note: candidates are: int rank [1015]
 int fa[ maxn ],rank[ maxn ];
                ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_35089054_31031.cpp:4:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^
0_0_35089054_31031.cpp:122:31: error: reference to 'rank' is ambiguous
                 rank[ fx ] += rank[ fy ];
                               ^
0_0_35089054_31031.cpp:29:16: note: candidates are: int rank [1015]
 int fa[ maxn ],rank[ maxn ];
                ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/move.h:57:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/bits/stl_pair.h:59,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/utility:70,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/algorithm:60,
                 from 0_0_35089054_31031.cpp:4:
GCC4.9.2/x86_64-w64-mingw32/include/c++/type_traits:1340:12: note:                 template<class> struct std::rank
     struct rank
            ^


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